<template>
  <div>
    <div>
      <button @click="insertText">insert text</button>
      <button @click="printHtml">print html</button>
      <button @click="disable">disable</button>
    </div>
    <div style="border: 1px solid #ccc; margin-top: 10px">
      <Toolbar
        :editor="editorRef"
        :defaultConfig="toolbarConfig"
        :mode="mode"
        style="border-bottom: 1px solid #ccc"
      />
      <Editor
        :defaultConfig="editorConfig"
        :mode="mode"
        v-model="valueHtml"
        style="height: 400px; overflow-y: hidden"
        @onCreated="handleCreated"
        @onChange="handleChange"
        @onDestroyed="handleDestroyed"
        @onFocus="handleFocus"
        @onBlur="handleBlur"
        @customAlert="customAlert"
        @customPaste="customPaste"
      />
    </div>
    <div style="margin-top: 10px">
      <textarea
        v-model="valueHtml"
        readonly
        style="width: 100%; height: 200px; outline: none"
      ></textarea>
    </div>
  </div>
</template>

<script>
import "@wangeditor/editor/dist/css/style.css";
import { onBeforeUnmount, ref, shallowRef, onMounted } from "vue";
import { Editor, Toolbar } from "@wangeditor/editor-for-vue";

export default {
  components: { Editor, Toolbar },
  setup() {
    // 编辑器实例，必须用 shallowRef，重要！
    const editorRef = shallowRef();

    // 内容 HTML
    const valueHtml = ref("<p>hello</p>");

    // 模拟 ajax 异步获取内容
    onMounted(() => {
      setTimeout(() => {
        valueHtml.value = "<p>模拟 Ajax 异步设置内容</p>";
      }, 1500);
    });

    const toolbarConfig = {};
    const editorConfig = { placeholder: "请输入内容..." };

    // 组件销毁时，也及时销毁编辑器，重要！
    onBeforeUnmount(() => {
      const editor = editorRef.value;
      if (editor == null) return;

      editor.destroy();
    });

    // 编辑器回调函数
    const handleCreated = (editor) => {
      console.log("created", editor);
      editorRef.value = editor; // 记录 editor 实例，重要！
    };
    const handleChange = (editor) => {
      console.log("change:", editor.getHtml());
    };
    const handleDestroyed = (editor) => {
      console.log("destroyed", editor);
    };
    const handleFocus = (editor) => {
      console.log("focus", editor);
    };
    const handleBlur = (editor) => {
      console.log("blur", editor);
    };
    const customAlert = (info, type) => {
      alert(`【自定义提示】${type} - ${info}`);
    };
    const customPaste = (editor, event, callback) => {
      console.log("ClipboardEvent 粘贴事件对象", event);

      // 自定义插入内容
      editor.insertText("xxx");

      // 返回值（注意，vue 事件的返回值，不能用 return）
      callback(false); // 返回 false ，阻止默认粘贴行为
      // callback(true) // 返回 true ，继续默认的粘贴行为
    };

    const insertText = () => {
      const editor = editorRef.value;
      if (editor == null) return;
      editor.insertText("hello world");
    };

    const printHtml = () => {
      const editor = editorRef.value;
      if (editor == null) return;
      console.log(editor.getHtml());
    };

    const disable = () => {
      const editor = editorRef.value;
      if (editor == null) return;
      editor.disable();
    };

    return {
      editorRef,
      mode: "default",
      valueHtml,
      toolbarConfig,
      editorConfig,
      handleCreated,
      handleChange,
      handleDestroyed,
      handleFocus,
      handleBlur,
      customAlert,
      customPaste,
      insertText,
      printHtml,
      disable
    };
  }
};
</script>
